Rearrange data in csv with Python -


i have .csv file following format:

a   b   c   d   e   f x1  x2  x3  x4  x5  x6 y1  y2  y3  y4  y5  y6 z1  z2  z3  z4  z5  z6

what want:

a   x1 b   x2 c   x3 d   x4 e   x5 f   x6   y1 b   y2 c   y3 d   y4 e   y5 f   y6   z1 b   z2 c   z3 d   z4 e   z5 f   z6

i unable wrap mind around built-in transpose functions in order achieve final result. appreciated.

you can melt dataframe using pandas:

import pandas pd  df = pd.read_csv(csv_filename) >>> pd.melt(df)    variable value 0            x1 1            y1 2            z1 3         b    x2 4         b    y2 5         b    z2 6         c    x3 7         c    y3 8         c    z3 9         d    x4 10        d    y4 11        d    z4 12        e    x5 13        e    y5 14        e    z5 15        f    x6 16        f    y6 17        f    z6

a pure python solution follows:

file_out_delimiter = ','  # use '\t' tab delimited. open(filename, 'r') f, open(filename_out, 'w') f_out:     headers = f.readline().split()     row in f:         pair in zip(headers, row.split()):             f_out.write(file_out_delimiter.join(pair) + '\n')

resulting in following file contents:

a,x1 b,x2 c,x3 d,x4 e,x5 f,x6 a,y1 b,y2 c,y3 d,y4 e,y5 f,y6 a,z1 b,z2 c,z3 d,z4 e,z5 f,z6

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